General Question

I've been a few months now and I really love all the information i've gotten so far Its amazing all this time I thought computers were only good for P0rn (lol.... i'm joking)

I said all that to ask this Why is it that most of you are running XP pro and not XP home? what are the real differences in the 2 softwares? i'm currently running Home and was considering getting Pro? WIll it make a difference in the end?